I did some for friends of my kids last year. They were shopping for a house and mentioned a house in my old work area. The street name put a blip up in my mind and I asked them for the address. Sure enough I had been in that house several times. When I was in the house it was owned by a couple in their 80's who both had severe medical problems. They moved into assisted living and sold the house to a flipper.
The house was a 1200 sq ft bungalow. L shaped living room/ dining room. With a central hall way to 3 bedrooms and a bathroom.
There was a crack in the main floor ceiling which ran the length of the room and down the hallway. The concrete basement had a crack in the wall under dining room/living room wall and the floor was heaved and cracked the length of the house exactly under the living room/hall ceiling crack. Two of the basement windows had cracks running from the window down to the floor. When I say cracks these are not hairline but large gaping type. Basically the foundation was screwed and would need major underpinning to repair properly.
When I went with the kids to look at the house I let them wander around first before saying anything. The flippers had dry walled a new layer over the crack in the living room and hall, but for some reason they took out the little L shaped wall between the kitchen and living room and dining room. Not a big deal but one of the walls was a support wall. The wall register in that wall now became a floor register and all they did was screw a wall register cover to the floor. The basement wall was drywalled over on the inside and the cracked basement floor had nice new carpet on it. They didn't fix the floor crack as you could feel the space under the carpet. They didn't spend $20 on material to trim out the walls by the basement windows and you could see the damage still. The crack in the basement wall on the outside they caulked the wall and then planted a bush against the wall to hide it. The kids ran.
I looked at about 20 houses for them over a period of 3 weekends. One had a furnace and water heater (gas) that the exhaust pipes were rotten and someone had wrapped silver Duck tape over to hide the holes. I called the gas company on that place.